<div class="app-header">
    <div class="app-header-item" (click)="goBack()"><img src="../../../assets/images/back.png" width="30" alt=""></div>
    <div class="app-header-item">生产成本</div>
    <div class="app-header-item"></div>
</div>
<ion-content class="bg-img">
    <h3>暂无数据</h3>
</ion-content>